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//===- llvm-mt.cpp - Merge .manifest files ---------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===---------------------------------------------------------------------===//
//
// Merge .manifest files. This is intended to be a platform-independent port
// of Microsoft's mt.exe.
//
//===---------------------------------------------------------------------===//
#include "llvm/Option/Arg.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Option/Option.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/FileOutputBuffer.h"
#include "llvm/Support/InitLLVM.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/WithColor.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/WindowsManifest/WindowsManifestMerger.h"
#include <system_error>
using namespace llvm;
namespace {
enum ID {
OPT_INVALID = 0, // This is not an option ID.
#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
HELPTEXT, METAVAR, VALUES) \
OPT_##ID,
#include "Opts.inc"
#undef OPTION
};
#define PREFIX(NAME, VALUE) const char *const NAME[] = VALUE;
#include "Opts.inc"
#undef PREFIX
const opt::OptTable::Info InfoTable[] = {
#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
HELPTEXT, METAVAR, VALUES) \
{ \
PREFIX, NAME, HELPTEXT, \
METAVAR, OPT_##ID, opt::Option::KIND##Class, \
PARAM, FLAGS, OPT_##GROUP, \
OPT_##ALIAS, ALIASARGS, VALUES},
#include "Opts.inc"
#undef OPTION
};
class CvtResOptTable : public opt::OptTable {
public:
CvtResOptTable() : OptTable(InfoTable, true) {}
};
} // namespace
[[noreturn]] static void reportError(Twine Msg) {
WithColor::error(errs(), "llvm-mt") << Msg << '\n';
exit(1);
}
static void reportError(StringRef Input, std::error_code EC) {
reportError(Twine(Input) + ": " + EC.message());
}
static void error(Error EC) {
if (EC)
handleAllErrors(std::move(EC), [&](const ErrorInfoBase &EI) {
reportError(EI.message());
});
}
int main(int Argc, const char **Argv) {
InitLLVM X(Argc, Argv);
CvtResOptTable T;
unsigned MAI, MAC;
ArrayRef<const char *> ArgsArr = makeArrayRef(Argv + 1, Argc - 1);
opt::InputArgList InputArgs = T.ParseArgs(ArgsArr, MAI, MAC);
for (auto *Arg : InputArgs.filtered(OPT_INPUT)) {
auto ArgString = Arg->getAsString(InputArgs);
std::string Diag;
raw_string_ostream OS(Diag);
OS << "invalid option '" << ArgString << "'";
std::string Nearest;
if (T.findNearest(ArgString, Nearest) < 2)
OS << ", did you mean '" << Nearest << "'?";
reportError(OS.str());
}
for (auto &Arg : InputArgs) {
if (Arg->getOption().matches(OPT_unsupported)) {
outs() << "llvm-mt: ignoring unsupported '" << Arg->getOption().getName()
<< "' option\n";
}
}
if (InputArgs.hasArg(OPT_help)) {
T.printHelp(outs(), "llvm-mt [options] file...", "Manifest Tool", false);
return 0;
}
std::vector<std::string> InputFiles = InputArgs.getAllArgValues(OPT_manifest);
if (InputFiles.size() == 0) {
reportError("no input file specified");
}
StringRef OutputFile;
if (InputArgs.hasArg(OPT_out)) {
OutputFile = InputArgs.getLastArgValue(OPT_out);
} else if (InputFiles.size() == 1) {
OutputFile = InputFiles[0];
} else {
reportError("no output file specified");
}
windows_manifest::WindowsManifestMerger Merger;
for (const auto &File : InputFiles) {
ErrorOr<std::unique_ptr<MemoryBuffer>> ManifestOrErr =
MemoryBuffer::getFile(File);
if (!ManifestOrErr)
reportError(File, ManifestOrErr.getError());
error(Merger.merge(*ManifestOrErr.get()));
}
std::unique_ptr<MemoryBuffer> OutputBuffer = Merger.getMergedManifest();
if (!OutputBuffer)
reportError("empty manifest not written");
int ExitCode = 0;
if (InputArgs.hasArg(OPT_notify_update)) {
ErrorOr<std::unique_ptr<MemoryBuffer>> OutBuffOrErr =
MemoryBuffer::getFile(OutputFile);
// Assume if we couldn't open the output file then it doesn't exist meaning
// there was a change.
bool Same = false;
if (OutBuffOrErr) {
const std::unique_ptr<MemoryBuffer> &FileBuffer = *OutBuffOrErr;
Same = std::equal(OutputBuffer->getBufferStart(),
OutputBuffer->getBufferEnd(),
FileBuffer->getBufferStart());
}
if (!Same) {
#if LLVM_ON_UNIX
ExitCode = 0xbb;
#elif defined(_WIN32)
ExitCode = 0x41020001;
#endif
}
}
Expected<std::unique_ptr<FileOutputBuffer>> FileOrErr =
FileOutputBuffer::create(OutputFile, OutputBuffer->getBufferSize());
if (!FileOrErr)
reportError(OutputFile, errorToErrorCode(FileOrErr.takeError()));
std::unique_ptr<FileOutputBuffer> FileBuffer = std::move(*FileOrErr);
std::copy(OutputBuffer->getBufferStart(), OutputBuffer->getBufferEnd(),
FileBuffer->getBufferStart());
error(FileBuffer->commit());
return ExitCode;
}
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